Distorted Sound when receiving recorded audioframe about advanced-audio

[winstondu]

@CavanSu , is there something I need to change to fix the voice distortion issue (seen in https://github.com/AgoraIO/Advanced-Audio/files/5127757/IMG_1513.mp4.zip)? Your Speech recognizer example only did remote audio, not the local recorded audio

[CavanSu]

Can you write audio data to pcm file directly? you upload mp4 file's sampleRate seems wrong @winstondu

[winstondu]

@CavanSu , do you have a code snippet that illustrates how I can write to PCM file directly?

also, were you able to replicate my issue using my example project?

[winstondu]

@CavanSu , I finally realized what the issue is.

For stereo channels, line 31 https://github.com/winstondu/Agora-RecordFrame-Bug/blob/e2269cd6bc05958441181faada72470d92aca8e3/SpeechRecognizer-iOS/MediaWorker.mm#L31

should have been

size_t size = audioFrame.bytesPerSample * audioFrame.samples * audioFrame.channels